/*
    Copyright (C) 2005, 2006 Apple Inc. All rights reserved.

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public License
    along with this library; see the file COPYING.LIB.  If not, write to
    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
    Boston, MA 02110-1301, USA.


    Some useful definitions needed for laying out elements
*/

#ifndef SKY_ENGINE_CORE_RENDERING_GAPRECTS_H_
#define SKY_ENGINE_CORE_RENDERING_GAPRECTS_H_

#include "flutter/sky/engine/platform/geometry/LayoutRect.h"

namespace blink {

struct GapRects {
  const LayoutRect& left() const { return m_left; }
  const LayoutRect& center() const { return m_center; }
  const LayoutRect& right() const { return m_right; }

  void uniteLeft(const LayoutRect& r) { m_left.unite(r); }
  void uniteCenter(const LayoutRect& r) { m_center.unite(r); }
  void uniteRight(const LayoutRect& r) { m_right.unite(r); }
  void unite(const GapRects& o) {
    uniteLeft(o.left());
    uniteCenter(o.center());
    uniteRight(o.right());
  }

  operator LayoutRect() const {
    LayoutRect result = m_left;
    result.unite(m_center);
    result.unite(m_right);
    return result;
  }

  bool operator==(const GapRects& other) {
    return m_left == other.left() && m_center == other.center() &&
           m_right == other.right();
  }
  bool operator!=(const GapRects& other) { return !(*this == other); }

 private:
  LayoutRect m_left;
  LayoutRect m_center;
  LayoutRect m_right;
};

}  // namespace blink

#endif  // SKY_ENGINE_CORE_RENDERING_GAPRECTS_H_
